FUNCTIONS: BACK REST Rolling, kneading, tapping. Manual recline for back rest. SEAT Air function with vibration. LEG REST Air massage with vibration. Manual raise for leg rest. FEATURES: Shiatsu massage technology-the most advanced robotic massge system available; Full enjoyment at back according to the contour of the back; Combined 4 massage function including rolling,kneading, compression and tapping into unity at back; Humanistic design of remote controller with LCD; Different Cover materials such as PU, Real Leather are availabie;